Build It! by Jennifer Kemmeter
While the actual Lego brand books are aimed at older kids (7+), these are just right for younger Lego fans (age 4-6, depending on skill). There are just under 20 build ideas with full instructions included. Each object is fairly small so easy for young ones to do on their own.
Pages are well laid out and not too cluttered. They start with a list of all the bricks needed for the build and then follow very easy, step by step instructions.
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